초록 ▼

An improved slow down system in sheet handling equipment which makes possible high speed handling of paper and plastic materials, including limp-bodied paper and plastic stocks, such as lightweight and recycled paper and plastic bags. In the prior high speed sheet handling systems, the slow down sec

An improved slow down system in sheet handling equipment which makes possible high speed handling of paper and plastic materials, including limp-bodied paper and plastic stocks, such as lightweight and recycled paper and plastic bags. In the prior high speed sheet handling systems, the slow down sections tend to jam because the limp-bodied sheets are easily deformed at higher speeds. A conventional snubber and a laydown device just following the high speed section of the sheet handling equipment lays down the trailing portion and edges of the first and successive incoming sheets, so that the lead edge of each successive sheet will clear all parts of the previous sheet. The sheets are squared by a tape slow down section, which comprises sets of adjustable slow down tapes with idler rollers and lower slow speed tapes with idler rollers, all running at the same speed. The idler rollers are adjustable so that the optimum stream can be obtained for any limp-bodied or lightweight sheets.

대표청구항 ▼

In a sheet or signature handling system for paper or plastic sheets or signatures having leading and trailing edges, including lightweight and limp-bodied paper stock, a one-stage slow down section for receiving successive sheets or signatures traveling at high speeds comprising in combination: a pl

In a sheet or signature handling system for paper or plastic sheets or signatures having leading and trailing edges, including lightweight and limp-bodied paper stock, a one-stage slow down section for receiving successive sheets or signatures traveling at high speeds comprising in combination: a plurality of snubber assemblies rotatably disposed at the upstream end of the one-stage slow down section of the system; a plurality of laydown members disposed on the periphery of the snubber assemblies; a plurality of upper high speed tapes disposed adjacent the snubber assemblies and the laydown members, said tapes having a horizontal length extending downstream from the snubber assemblies in excess of the length of a sheet or signature; a plurality of lower, one-stage slow speed tapes disposed below the snubber assemblies and the laydown members and having a horizontal length extending downstream beyond the downstream end of the upper high speed tapes; a plurality of upper, one-stage slow speed tapes having a horizontal length disposed just above the downstream end of the horizontal length of the lower, one-stage slow speed tapes, and overlapping the downstream end of the horizontal length of the upper, high speed tapes; and a plurality of snubber members mounted on the snubber assemblies for contacting and knocking down the upper side of the trailing edge of an incoming sheet or signature in cooperation with the laydown members which contact the trailing edge after the snubbing members to transfer the successive incoming sheets or signatures directly from the upper high speed tapes to the lower, slow speed tapes while shingling the successive incoming sheets or signatures and slowing their speed to the speed of the low speed tapes without jamming or fouling the sheets or signatures.